“Some years ago, when the Google Books project, which aims to digitise all of the world’s printed books, was getting under way, the two co-founders of Google were having a meeting with the librarian of one of the universities that had signed up for the plan. At one point in the conversation, the Google boys noticed that their collaborator had suddenly gone rather quiet. One of them asked him what was the matter. “Well”, he replied, “I’m wondering what happens to all this stuff when Google no longer exists.” Recounting the conversation to me later, he said: “I’ve never seen two young people looking so stunned: the idea that Google might not exist one day had never crossed their minds.”